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boinc/sched/assimilator.cpp

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// This is a framework for an assimilator.
// You need to link this with an (application-specific) function
// assimilate_handler()
// in order to make a complete program.
//
#include "config.h"
#include <cstring>
#include <cstdlib>
#include <unistd.h>
#include <ctime>
#include <vector>
#include "boinc_db.h"
#include "parse.h"
#include "util.h"
#include "error_numbers.h"
#include "str_util.h"
#include "svn_version.h"
#include "sched_config.h"
#include "sched_util.h"
#include "sched_msgs.h"
#include "assimilate_handler.h"
using std::vector;
#define LOCKFILE "assimilator.out"
#define PIDFILE "assimilator.pid"
#define SLEEP_INTERVAL 10
bool update_db = true;
bool noinsert = false;
int wu_id_modulus=0, wu_id_remainder=0;
int sleep_interval = SLEEP_INTERVAL;
int one_pass_N_WU=0;
int g_argc;
char** g_argv;
char* results_prefix = NULL;
char* transcripts_prefix = NULL;
void usage(char** argv) {
fprintf(stderr,
"This program is an 'assimilator'; it handles completed jobs.\n"
"Normally it is run as a daemon from config.xml.\n"
"See: http://boinc.berkeley.edu/trac/wiki/BackendPrograms\n\n"
);
fprintf(stderr, "usage: %s [options]\n"
" Options:\n"
" --app name Process jobs for the given application\n"
" [--sleep_interval X] Sleep X seconds if no jobs to process (default 10)\n"
" [--mod N R] Process jobs with mod(ID, N) == R\n"
" [--one_pass] Do one DB enumeration, then exit\n"
" [--one_pass_N_WU N] Process at most N jobs\n"
" [-d | --debug_level N] Set verbosity level (1 to 4)\n"
" [--dont_update_db] Don't update DB (for testing)\n"
" [--noinsert] Don't insert records in app-specific DB\n"
" [-h | --help] Show this\n"
" [-v | --version] Show version information\n",
argv[0]
);
exit(0);
}
// assimilate all WUs that need it
// return nonzero (true) if did anything
//
bool do_pass(APP& app) {
DB_WORKUNIT wu;
DB_RESULT canonical_result, result;
bool did_something = false;
char buf[256];
char mod_clause[256];
int retval;
int num_assimilated=0;
if (wu_id_modulus) {
sprintf(mod_clause, " and workunit.id %% %d = %d ",
wu_id_modulus, wu_id_remainder
);
} else {
strcpy(mod_clause, "");
}
sprintf(buf,
"where appid=%d and assimilate_state=%d %s limit %d",
app.id, ASSIMILATE_READY, mod_clause,
one_pass_N_WU ? one_pass_N_WU : 1000
);
while (1) {
retval = wu.enumerate(buf);
if (retval) {
if (retval != ERR_DB_NOT_FOUND) {
log_messages.printf(MSG_DEBUG,
"DB connection lost, exiting\n"
);
exit(0);
}
break;
}
vector<RESULT> results; // must be inside while()!
// for testing purposes, pretend we did nothing
//
if (update_db) {
did_something = true;
}
log_messages.printf(MSG_DEBUG,
"[%s] assimilating WU %d; state=%d\n", wu.name, wu.id, wu.assimilate_state
);
sprintf(buf, "where workunitid=%d", wu.id);
canonical_result.clear();
bool found = false;
while (1) {
retval = result.enumerate(buf);
if (retval) {
if (retval != ERR_DB_NOT_FOUND) {
log_messages.printf(MSG_DEBUG,
"DB connection lost, exiting\n"
);
exit(0);
}
break;
}
results.push_back(result);
if (result.id == wu.canonical_resultid) {
canonical_result = result;
found = true;
}
}
// If no canonical result found and WU had no other errors,
// something is wrong, e.g. result records got deleted prematurely.
// This is probably unrecoverable, so mark the WU as having
// an assimilation error and keep going.
//
if (!found && !wu.error_mask) {
log_messages.printf(MSG_CRITICAL,
"[%s] no canonical result\n", wu.name
);
wu.error_mask = WU_ERROR_NO_CANONICAL_RESULT;
sprintf(buf, "error_mask=%d", wu.error_mask);
wu.update_field(buf);
}
retval = assimilate_handler(wu, results, canonical_result);
if (retval && retval != DEFER_ASSIMILATION) {
log_messages.printf(MSG_CRITICAL,
"[%s] handler error: %s; exiting\n", wu.name, boincerror(retval)
);
exit(retval);
}
if (update_db) {
// Defer assimilation until next result is returned
int assimilate_state = ASSIMILATE_DONE;
if (retval == DEFER_ASSIMILATION) {
assimilate_state = ASSIMILATE_INIT;
}
sprintf(
buf, "assimilate_state=%d, transition_time=%d",
assimilate_state, (int)time(0)
);
retval = wu.update_field(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[%s] update failed: %s\n", wu.name, boincerror(retval)
);
exit(1);
}
}
num_assimilated++;
}
if (did_something) {
boinc_db.commit_transaction();
}
if (num_assimilated) {
log_messages.printf(MSG_NORMAL,
"Assimilated %d workunits.\n", num_assimilated
);
}
return did_something;
}
int main(int argc, char** argv) {
int retval;
bool one_pass = false;
DB_APP app;
int i;
char buf[256];
strcpy(app.name, "");
check_stop_daemons();
g_argc = argc;
g_argv = argv;
for (i=1; i<argc; i++) {
if (is_arg(argv[i], "one_pass_N_WU")) {
one_pass_N_WU = atoi(argv[++i]);
one_pass = true;
} else if (is_arg(argv[i], "sleep_interval")) {
sleep_interval = atoi(argv[++i]);
} else if (is_arg(argv[i], "one_pass")) {
one_pass = true;
} else if (is_arg(argv[i], "d") || is_arg(argv[i], "debug_level")) {
int dl = atoi(argv[++i]);
log_messages.set_debug_level(dl);
if (dl ==4) g_print_queries = true;
} else if (is_arg(argv[i], "app")) {
strcpy(app.name, argv[++i]);
} else if (is_arg(argv[i], "dont_update_db")) {
// This option is for testing your assimilator. When set,
// it ensures that the assimilator does not actually modify
// the assimilate_state of the workunits, so you can run
// your assimilator over and over again without affecting
// your project.
update_db = false;
} else if (is_arg(argv[i], "noinsert")) {
// This option is also for testing and is used to
// prevent the inserting of results into the *backend*
// (as opposed to the boinc) DB.
noinsert = true;
} else if (is_arg(argv[i], "mod")) {
wu_id_modulus = atoi(argv[++i]);
wu_id_remainder = atoi(argv[++i]);
} else if (is_arg(argv[i], "help") || is_arg(argv[i], "h")) {
usage(argv);
} else if (is_arg(argv[i], "v") || is_arg(argv[i], "version")) {
printf("%s\n", SVN_VERSION);
exit(0);
} else if (is_arg(argv[i], "results_prefix")) {
results_prefix=argv[++i];
} else if (is_arg(argv[i], "transcripts_prefix")) {
transcripts_prefix=argv[++i];
} else {
log_messages.printf(MSG_CRITICAL, "Unrecognized arg: %s\n", argv[i]);
usage(argv);
}
}
if (!strlen(app.name)) {
usage(argv);
}
if (wu_id_modulus) {
log_messages.printf(MSG_DEBUG,
"Using mod'ed WU enumeration. modulus = %d remainder = %d\n",
wu_id_modulus, wu_id_remainder
);
}
retval = config.parse_file();
if (retval) {
log_messages.printf(MSG_CRITICAL,
"Can't parse config.xml: %s\n", boincerror(retval)
);
exit(1);
}
log_messages.printf(MSG_NORMAL, "Starting\n");
retval = boinc_db.open(config.db_name, config.db_host, config.db_user, config.db_passwd);
if (retval) {
log_messages.printf(MSG_CRITICAL, "Can't open DB\n");
exit(1);
}
sprintf(buf, "where name='%s'", app.name);
retval = app.lookup(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL, "Can't find app\n");
exit(1);
}
install_stop_signal_handler();
do {
if (!do_pass(app)) {
if (!one_pass) {
daemon_sleep(sleep_interval);
}
}
check_stop_daemons();
} while (!one_pass);
}
const char *BOINC_RCSID_7841370789 = "$Id$";
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